From 4d129e3da5be96cd44f26a385ee240db65ca3210 Mon Sep 17 00:00:00 2001
From: Alexey Derin <aderin@croc.ru>
Date: Fri, 4 Jun 2021 18:04:22 +0300
Subject: [PATCH 1/2] Allow keep-alive with proxy for message with appropriate
 header

---
 aiohttp/connector.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/aiohttp/connector.py b/aiohttp/connector.py
index 58c528de6fb..999da0e2f41 100644
--- a/aiohttp/connector.py
+++ b/aiohttp/connector.py
@@ -1052,8 +1052,9 @@ async def _create_proxy_connection(
 
         # Many HTTP proxies has buggy keepalive support.  Let's not
         # reuse connection but close it after processing every
-        # response.
-        proto.force_close()
+        # response besides request has keep-alive header.
+        if not req.keep_alive():
+            proto.force_close()
 
         auth = proxy_req.headers.pop(hdrs.AUTHORIZATION, None)
         if auth is not None:

From ac3a77784b308d5e5b8ee4d46aef6681a3093d9b Mon Sep 17 00:00:00 2001
From: Alexey Derin <aderin@croc.ru>
Date: Fri, 4 Jun 2021 18:42:37 +0300
Subject: [PATCH 2/2] Add changenotes

---
 CHANGES/5765.feature | 1 +
 1 file changed, 1 insertion(+)
 create mode 100644 CHANGES/5765.feature

diff --git a/CHANGES/5765.feature b/CHANGES/5765.feature
new file mode 100644
index 00000000000..6006d993365
--- /dev/null
+++ b/CHANGES/5765.feature
@@ -0,0 +1 @@
+Allow keep-alive connection with proxy when client explicitly sets keep-alive header.